Courtesy of L'OrealA 1941 advertisement for Maybelline's Glow with Enchantment featured Rita Hayworth.

Whether you're a beauty product junkie or the type of woman who's been wearing the same shade of drugstore lipstick for years, chance are, somewhere in your makeup bag or shower caddie is a L'Oreal product.

The cosmetic colossus owns some of the world's most well-known beauty brands, among them Lancome, Garnier, PureOlogy, Maybelline, Redken, Shu Uemura, Skinceuticals, Kerastase and Kiehl's.

The company, which marks its 100th anniversary today, started in the kitchen of French chemist Eugene Schueller. Using an oxidation process, Schueller created a permanent hair color calling it "L'Aureale," after a popular hairstyle of the time.

Courtesy of L'OrealA 1915 advertisement for L'Oreal hair color.

L'Oreal Paris is celebrating the centennial with gifts. The division is slashing prices on some of its more popular products. But shoppers will have to be savvy to catch the promotion. Company spokeswoman Dana Supnick-Neff said drugstores, groceries and other retailers will mark down prices for one week in June or July, but the exact date of the promotion is up to each store. "Consumers should call their local retailer to find out when during these two months they are running the special," she said.